US2357328A

US2357328A - Film winding mechanism

Info

Publication number: US2357328A
Application number: US413517A
Authority: US
Inventors: Clinton H Harris
Original assignee: Argus Inc
Current assignee: Argus Inc
Priority date: 1941-10-03
Filing date: 1941-10-03
Publication date: 1944-09-05
Anticipated expiration: 1961-09-05

Description

Sept. 5, 1944. c HARRIS 2,357,328

FILM WINDING MECHANISM.

Filed Oct. 3, 1941 INVENTOR. Clinton HHomrr'iS BY Patented Sept. 5, 1944 FILM WINDING MECHANISM Clinton 1!. Harris. Ann Arbor. Mich, minor to .Argns, Incorporated, a corporation of Michgan Application October 8, 1841, Serial No. 413,517

7 Claims.

The present invention relates to photographic cameras, and more particularly to a iilrn winding mechanism therefor. One of the obieots of the present invention is to provide a new and improved winding mechanism for photographic cameras which is simple and rugged in construction and e'flicient and convenient in operation. Another object is to provide a winding mechanism for photographic cameras in which the winding handle functions either as a knob or a swing type handle. A further obiect is to provide a winding mechanism for photographic cameras in which the winding handle folds into a flat and inconspicuous position on the camera. These and other obi'ects and advantages reside in certain novel features of construction, arrangement and combination of parts, as will hereinafter be more fully set forth and pointed out in the appended claims.

In the drawing:

Fig. l'is a fragmentary perspective view of the winding mechanism with the winding handles in folded position to be used as a knob.

Fig. 2 is a view similar to Fig. l with the winding handle in the upright position.

Fig. 3 is a fragmentary vertical section of the winding mechanism.

' Fig. 4 is an exploded view of the winding mechanism.

A preferred embodiment of my invention is illustrated in the drawing wherein it designates the front and ii the rear of a camera. This camera is provided with a top I! having a flange II which overlies the back ii of the camera to form a light cell. A wall It within the camera forms a chamber for a film spool I! carrying the usual photographic film it. This wall it is provided with an aperture Il within which is fixed a bearing member ll. The top II of the camera has a recess or depression is terminating in a flat bottom wall portion which rests on the upper surface of the bearing II. A spindle ii is Journalled in the bearing II and extends into the spool chamber formed by the wall it. The lower end of the spindle II is bifurcated as indicated at 22 to engage the film spool II for turning.

A flange 23 on the spindle 2i engages the inner surface of the wall It and prevents withdrawal of the spindle through the aperture ii. A pin 24 extends diametrically through the spindle II at its outer end and two substantially identical

arcuate handles

25 and 26 extend around opposite sides of the spindle 2i and are pivotally secured on the pin ll.

(Clill-71) A collar I1 having a hat top It and a central aperture Ills slideable on the spindle Ii between the wall portion II and the handles 2| and II. A flat washer SI having acentral aperture Ii 5 encircles the spindle 2i and rests against the wall portion III. A helical spring 82 encircles the spindle 2| between the washer It and the collar 21 and urges the collar upward against the handles tl and 2!. The handles 2! and 28 are substantially rectangular in cross section and their pivoted ends are flattened as indicated at 88.

The pressure of the flat surface 28 of the collar Il urged upward by the spring 82 engages either the flat sides of the handles 2! and 20 or the flattened end portions II to hold these handles either in the flattened position shown in Figs. 1 and 8. v or in the position shown in Fig. 2. With the han- ;dies 2! and 2' in the position shown in Figs. l and 3. the spindle Ii may be turned by the 20 knurled outer edge of the handles. In this position the two handles function as a knob. In the position shown in Fig. 2 and shown in dotted lines in Fig. 8, the handle it may be grasped with the thumb and nnger and is thus somewhat easier as to turn.

From the foregoing, itwill beapparent that I am able to attain the objects of my inv ntion and provide a simple and inexpensive film winding mechanism for cameras in which the winding so handle may be adjusted and maintained in either of two convenient positions. Various modifications in details of structure can of course be made without departing from the spirit of my invention or the scope of the appended claims.

I claim:

1. A winding mechanism for a camera having a wall provided with an opening, said winding mechanism comprising a winding shaft extending through said opening and rotatable therein, means for preventing withdrawal of said spindle from said wall, a handle, means pivotally securing said handle to said shaft, a slidable collar surrounding said shaft between said handle and said wall, resilient means for urging said collar into frictional engagement with said handle, and

cooperating formations on said handle and resiliently urged collar for maintaining said handle in either of two predetermined pivotal positions on said shaft.

2. In a camera having an apertured bearing in one wall, a winding shaft iournalled in said hearing, a lime on said shaft inside said camera for engaging the inner surface of said wall, a pin extending diametrically through said shaft outside said camera, a pair of similar arcuate handles of said spindle from said wall, a pair of substantially identical arcuate handles extending around opposite sides of said spindle and pivotally secured on said spindle, the adjacent pivoted ends of said handles being flattened, a collar having a substantially flat top slideably mounted on said spindle between said handles and said wall and spring means for pressing the fiat top of said collar against the flattened end or whichever of said handles is in upright position.

4. In a camera, a wall having an aperture, a

- rotatable spindle extending through said aperture and means preventing withdrawal of said spindle through said aperture, a collar having a substantially flat top surface slidable on said shaft, a handle pivoted to said shaft formed with a flat side face adjacent the collar and a fiat end face adjacent the pivot, and a spring reacting between said wall and said collar for urging the fiat top surface of said collar against either of the fiat face on said handle depending upon the pivotal position of said handle, so as to frictionally hold said handle in either of two pivotal positions.

5. In a camera, a wall formed with an apertured depression, a rotatable film spool spindle shaft extending through the aperture in said depression, means preventing axial withdrawal of said shaft outwardly through said aperture, a slidable collar on said shaft, 9, spring surrounding said shaft extending between the bottom of said depression and said collar, and a handle pivoted to the outer end of said shaft, said handle being foldable to an inconspicuous position substantially r around opposite sides of said shaft and within said depression or swingable into an upright winding position projecting from said depression and being maintained in either of said positions by said spring and collar.

6. In a camera, a wall formed with a depression, the bottom of said depression being formed with an aperture, 9. rotatably mounted film spool support shaft extending through said aperture, a flange on said shaft engaging a fixed part on said camera for preventing withdrawal of said shaft through said aperture, a spring surrounding said shaft within said depression, a slidable collar on said shaft housing said spring, and a pivoted handle on said shaft beyond said collar, said handle being foldable to an inconspicuous position substantially within said recess or swingable into upright winding position projecting from said depression, and said spring reacting against the camera to force said collar against the handle to frictionally retain the latter in either position.

7. In a camera, a wall having an opening, a rotatable spindle extending through said opening to the exterior of the camera, a pair of arcuate handles pivoted on the projecting external end of said spindle for limited independent rocking movement about a common axis disposed normal to the axis of said spindle spaced outwardly from said wall, said handles each being rockable over the end of said spindle into an operative spindle winding position and embodying interengageable means for preventing said handles from being rocked into operative position simultaneously, a resilient pressure device surrounding said spindle intermediate said wall and said handles and exerting axially directed forces against the latter, said handles having faces coacting with said pressure device for causing said handles to be normally retained in folded inoperative position normal to the spindle and also being operable to retain either of said handles in operative position, at right angles to said folded position, aid pressure device constantly urging said spindle outwardly, and means for limiting outward movement of said spindle.

CLINTON H. HARRIS.